let str : string = '𠮷';
console.log ('\u{20BB7}');
console.log (new RegExp ('\u{20BB7}', 'u'));
console.log (/^.$/u.test (str));
console.log (str.codePointAt (0));
console.log (str.codePointAt (1));
console.log (String.fromCodePoint (134071));
